APA (7th ed.) Citation

Atai, F., & Langmann, E. (2018). Series Solutions of the Non-Stationary Heun Equation. Symmetry, Integrability and Geometry: Methods and Applications.

Chicago Style (17th ed.) Citation

Atai, F., and E. Langmann. "Series Solutions of the Non-Stationary Heun Equation." Symmetry, Integrability and Geometry: Methods and Applications 2018.

MLA (8th ed.) Citation

Atai, F., and E. Langmann. "Series Solutions of the Non-Stationary Heun Equation." Symmetry, Integrability and Geometry: Methods and Applications, 2018.

Warning: These citations may not always be 100% accurate.